Httperf only allows cookies of 256 bytes or less. Rails sets cookies that are bigger than that. This will result in output such as `httperf.sess_cookie: truncating cookie to 245 bytes` and failed Rails sessions. This brew adds the `--big-cookies` option to the `httperf` formula so you can use it with Rails.

httperf_big_cookies.rb

require 'formula'

class Httperf < Formula
  homepage 'http://code.google.com/p/httperf/'
  url 'http://httperf.googlecode.com/files/httperf-0.9.0.tar.gz'
  sha1 '2aa885c0c143d809c0e50a6eca5063090bddee35'

  option 'enable-debug', 'Build with debugging support'
  option 'big-cookies', 'Allow cookies larger than 256 bytes'

  def install
    debug = build.include?('enable-debug') ? '--enable-debug' : '--disable-debug'

    if build.include?('big-cookies')
      inreplace 'src/gen/sess_cookie.c' do |s|
        s.gsub! /MAX_COOKIE_LEN\s+256/, 'MAX_COOKIE_LEN 1024'
      end
    end

    system "./configure", debug,
    "--disable-dependency-tracking",
    "--prefix=#{prefix}"
    system "make install"
  end
end